Removal of the Low Pressure Compressor (LPC) Bleed-Slave Actuator [IAE]

TASK 75-31-43-000-010-B
Removal of the Low Pressure Compressor (LPC) Bleed-Slave Actuator

CAUTION: DO NOT LET ENGINE FUEL OR OIL FALL ON THE ENGINE. UNWANTED FUEL OR OIL MUST BE REMOVED IMMEDIATELY WITH A CLEAN LINT FREE CLOTH. THE FUEL OR OIL CAN CAUSE DAMAGE TO THE SURFACE PROTECTION AND TO SOME PARTS.

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 1M(3 FT)
No specific	AR	CONTAINER 5 L (1.32 USGAL)
No specific	AR	COVER - BLANKING
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 462AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
LPC Bleed - Slave Actuator
LPC Bleed - Slave Actuator

3. Job Set-up
Subtask 75-31-43-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 75-31-43-010-053-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 1M(3 FT) in position.

Subtask 75-31-43-040-052-A ** ON A/C NOT FOR ALL

C. Deactivate the Thrust Reverser

WARNING: MAKE SURE THAT THE THRUST REVERSER HYDRAULIC CONTROL UNIT (HCU) IS DEACTIVATED BEFORE YOU DO WORK ON OR AROUND THE THRUST REVERSER. IF THE HCU IS NOT DEACTIVATED, THERE IS A RISK OF UNWANTED THRUST REVERSER OPERATION WHICH CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

(1) Deactivate the thrust reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 75-31-43-010-054-A ** ON A/C NOT FOR ALL

D. Open the right thrust reverser half (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
452AR
(2) FOR [1000EM2] (ENGINE-2)
462AR

4. Procedure
Subtask 75-31-43-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the LPC Bleed Slave Actuator
(1) Disconnect the air inlet hoses from the ignition cooler boxes.
(a) Loosen the hose clamps (1) and (9).
(b) Disconnect the hoses (2) and (8) from the cooler boxes (11) and (10).
(2) Disconnect the clamp from the bracket.

Pre SBE 75-0035
(a) Remove the bolt (6) and the washer (5) which attach the clamp (4) to the bracket. Clipping point 5560.

SBE 75-0035
(b) Remove the bolt (12), which attaches the clamp (13) to the bracket. Clipping point 5560.
(3) Put the CONTAINER 5 L (1.32 USGAL) in position to catch all drained fuel from the actuator.
(4) Disconnect the seal drain fuel tube.
(a) Cut and discard the lockwire which safeties the tube coupling nut to the connector.
(b) Disconnect the seal drain fuel tube (25).
(5) Disconnect the servo retract fuel tube.
(a) Remove the bolt (51), the washer (52) and the spacer (55) which attach the clips (53) and (54) to the bracket (57) at Detail C. Clipping point 5673.
(b) Remove the bolt (72), the two washer (74) and the nut (73) which attach the clips (71) and (75) at Detail D. Clippint point 5769.
(c) Remove the bolt (62), the washer (61) and the spacer (66) which attach the clip (63) to the bracket (65) at Detail E. Clipping point 5775.
(d) Cut and discard the lockwire which safeties the tube coupling nut to the connector.
(e) Disconnect the servo retract fuel tube (22).
(f) Remove and discard the sealing ring (23).
(6) Disconnect the servo extend fuel tube.
(a) Cut and discard the lockwire which safeties the tube coupling nut to the connector.
(b) Disconnect the servo extend fuel tube (21).
(c) Remove and discard the sealing ring (24).
(7) Remove the slave actuator.
(a) Bend back the keys on the double key washer (35) which safeties the bolt (34) to the piston-jack fork end (36).
(b) Remove the bolt (34) and the key washer (35) and disconnect the fork end (36) from the bleed valve actuating rod (37). Discard the key washer.
(c) Remove the bolt (32) and (41) and remove the slave actuator (31) and the bracket (40) from the actuator bracket (39).
(d) Drain the remaining fuel in the slave actuator in to the container if it is necessary.
(8) Remove the container and discard all drained fuel.

Subtask 75-31-43-620-051-A ** ON A/C NOT FOR ALL

B. Put the applicable COVER - BLANKING on all the openings.

[Rev.10 from 2021] 2026.04.01 13:00:27 UTC